package com.sky.service.impl;

import cn.hutool.core.bean.BeanUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.*;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;

@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper,Employee> implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    @Override
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();
        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);
        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //密码比对
        // TODO 后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }
        if (employee.getStatus().equals(StatusConstant.DISABLE)) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }

    @Override
    public PageResult selectEmployeeList(EmployeePageQueryDTO dto) {
        PageHelper.startPage(dto.getPage(),dto.getPageSize());
        Page<Employee> employees = employeeMapper.selectEmployeeList(dto);
        return new PageResult(employees.getTotal(),employees.getResult());
    }

    @Override
    public Employee selectEmployeeById(Long id) {
        return employeeMapper.selectEmployeeById(id);
    }

    @Override
    public void insertEmployee(EmployeeAddDto dto) {
        Employee employee = BeanUtil.copyProperties(dto, Employee.class);
        employee.setStatus(StatusConstant.ENABLE);
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));
        this.save(employee);
    }

    @Override
    public void editEmployee(updateEmployeeDto dto) {
        Employee employee = BeanUtil.copyProperties(dto, Employee.class);
        this.updateById(employee);
    }

    @Override
    public void updateEmployeeStatus(Integer status,Long id) {
        employeeMapper.updateEmployeeStatus(status,id);
    }

    @Override
    public void editPassword(EditPasswordDto dto) {
        //先获取员工的旧密码
        Employee employee = employeeMapper.selectEmployeeById(dto.getEmpId());
        //比对旧密码是否一致
       String oldPassword = DigestUtils.md5DigestAsHex(dto.getOldPassword().getBytes());
        if (!oldPassword.equals(employee.getPassword())) {
            //旧密码错误
            throw new PasswordErrorException(MessageConstant.OLD_PASSWORD_ERROR);
        }
        //对新密码加密
        dto.setOldPassword(DigestUtils.md5DigestAsHex(dto.getNewPassword().getBytes()));
        employeeMapper.editPassword(dto);
    }


}
